Simply place the tool or object you want to magnetize inside the coil and briefly press S1. The generated single polarity field should magnetize the object if the material it is made to allow.
In the figure we have the way to connect two high power operational amplifiers LM12 to double the...
An excellent reflex receiver of 4 transistors is shown in the figure having been obtained in a...
Figure 1 shows a simple audio oscillator driven by the SCR When the sensor is closed. The circuit...